CN110632814A - Lighting system and projection device - Google Patents

Abstract

An illumination system is used for providing an illumination beam and comprises an excitation light source and a wavelength conversion module. The excitation light source is used for emitting an excitation light beam. The wavelength conversion module is located on the transmission path of the excitation light beam and is provided with an annular wavelength conversion area. A first part of the excitation light beam is incident on the annular wavelength conversion region and converted into first color light, and a second part of the excitation light beam is incident on the wavelength conversion module and formed into second color light. The ratio of the excitation beam to the excitation beam of the second portion ranges in value from 5% to 30%. In addition, a projection device is also provided. The illumination system and the projection device have simple structures and concise light path layouts.

Description

Lighting system and projection device

technical field

The present invention relates to an optical system and an optical device including the above optical system, and in particular to an illumination system and a projection device.

Background technique

Recently, projection devices based on solid-state light sources such as light-emitting diodes (LEDs) and laser diodes (laser diodes) gradually occupy a place in the market. Since laser diodes have a luminous efficiency higher than about 20%, in order to break through the light source limitation of light emitting diodes, laser light sources are used to excite phosphors to produce pure color light sources for projectors.

There is a multi-chip digital light processing (Digital Light Processing, DLP) projector architecture, which mainly uses more than two sets of blue laser light sources, and one set of blue light laser light sources emits blue laser beams to irradiate the fluorescent wheel. Phosphor powder and reflective area (or transmissive area) to output yellow light and blue light, and then through the dichroic mirror in the projector, the yellow light is separated into red light and green light to form two primary color lights, which are guided to follow the light valve. Another group of blue laser light sources provides blue laser beams. After the blue laser beams pass through the laser spot elimination device (such as: independent blue light diffusion sheet or astigmatism wheel) to eliminate laser speckle phenomenon (laser speckle), the blue laser beam is eliminated. Subsequent optical elements lead to subsequent light valves. In this way, three color lights of blue, green and red can be formed.

The "Background Technology" section is only used to help understand the content of the present invention, so the content disclosed in the "Background Technology" section may contain some known technologies that are not known to those skilled in the art. The content disclosed in the "Background Technology" section does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those skilled in the art before the application of the present invention.

Contents of the invention

The present invention provides a lighting system with a simple structure.

The present invention provides a projection device with a simple structure.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a lighting system. The illumination system is used to provide an illumination beam, and includes an excitation light source and a wavelength conversion module. The excitation light source is used to emit an excitation light beam. The wavelength conversion module is located on the transmission path of the excitation beam and has an annular wavelength conversion region. When the excitation beam is transmitted to the wavelength conversion module, the excitation beam forms a spot on the wavelength conversion module, and at least part of the spot is located in the annular wavelength conversion area. area, and a first part of the excitation beam is incident on the annular wavelength conversion region and converted into a first color light, and a second part of the excitation beam is incident on the wavelength conversion module to form a second color light, wherein the first color light Simultaneously with the second color light, the light is emitted from the wavelength conversion module, and the illumination light beam includes the first color light and the second color light, and the ratio of the excitation light beam to the excitation light beam in the second part ranges from 5% to 30%.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a projection device. The projection device includes the aforementioned lighting system, a light splitting and combining unit, at least two light valves and a projection lens. The light splitting and combining unit is located on the transmission path of the illumination beam, and is used for converting the illumination beam into multiple sub-illumination beams. At least two light valves are located on the transmission path of the plurality of sub-illumination beams and are used for converting the corresponding plurality of sub-illumination beams into a plurality of image beams. A projection lens is located on the transmission path of the plurality of image beams and is used for converting the plurality of image beams into a projection beam, wherein the plurality of image beams are transmitted to the projection lens through the splitting and combining unit.

Based on the above, the embodiments of the present invention have at least one of the following advantages or functions. In an embodiment of the present invention, the lighting system and the projection device can convert a part of the excitation light beam from the same excitation light source into the first color light through the configuration of the annular wavelength conversion region of the wavelength conversion module, and the other part forms the first color light. Dichroic light. In this way, the lighting system and the projection device can form blue, green, and red colors of light with only one exciting light source, and have a simple structure and a concise optical path layout. Moreover, since the light path layout of the lighting system and the projection device can be effectively simplified, the layout flexibility of other components in the system can also be increased at the same time. In addition, since the lighting system and the projection device only need to be equipped with one exciting light source, the energy of the light source will be concentrated in one place, which can reduce the design complexity of the cooling module and help increase the design flexibility of the system layout.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1A is a schematic structural diagram of a projection device according to an embodiment of the present invention.

FIG. 1B is a schematic front view of a wavelength conversion module in FIG. 1A .

FIG. 1C is a schematic cross-sectional view of the wavelength conversion module in FIG. 1B .

FIG. 1D is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A .

FIG. 1E is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A .

FIG. 1F is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A .

2A to 3C are structural diagrams of various lighting systems in FIG. 1A .

FIG. 4A is a schematic front view of another wavelength conversion module in FIG. 1A .

FIG. 4B is a schematic cross-sectional view of the wavelength conversion module in FIG. 4A .

FIG. 4C is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A .

FIG. 4D is a schematic front view of another wavelength conversion module in FIG. 1A .

4E to 4G are schematic cross-sectional views of various wavelength conversion modules in FIG. 1A .

FIG. 5A is a schematic structural diagram of another lighting system in FIG. 1A .

FIG. 5B is a schematic top view of a wavelength conversion module in FIG. 5A .

FIG. 5C is a schematic cross-sectional view of the wavelength conversion module in FIG. 5B .

FIG. 5D is a schematic top view of another wavelength conversion module of FIG. 5A .

FIG. 5E is a schematic cross-sectional view of the wavelength conversion module in FIG. 5D .

FIG. 5F is a schematic cross-sectional view of another wavelength conversion module in FIG. 5A .

6A to 6C are structural diagrams of various lighting systems in FIG. 1A .

FIG. 7A is a schematic structural diagram of another lighting system in FIG. 1A .

FIG. 7B is a schematic top view of a light splitting element in FIG. 7A .

FIG. 8A is a schematic structural diagram of another lighting system in FIG. 1A .

FIG. 8B is a schematic top view of a light splitting element of FIG. 8A .

FIG. 9A is a schematic structural diagram of another lighting system in FIG. 1A .

FIG. 9B is a schematic top view of a wavelength conversion module in FIG. 9A .

FIG. 9C is a schematic cross-sectional view of the wavelength conversion module in FIG. 9B .

FIG. 9D is a schematic top view of another wavelength conversion module of FIG. 9A .

FIG. 9E is a schematic cross-sectional view of the wavelength conversion module in FIG. 9D .

10 to 11B are schematic structural diagrams of various lighting systems in FIG. 1A .

FIG. 12 is a schematic structural diagram of another projection device according to an embodiment of the present invention.

Detailed ways

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

FIG. 1A is a schematic structural diagram of a projection device according to an embodiment of the present invention. FIG. 1B is a schematic front view of a wavelength conversion module in FIG. 1A . FIG. 1C is a schematic cross-sectional view of the wavelength conversion module in FIG. 1B . Referring to FIG. 1A , in this embodiment, the projection device 100 includes an illumination system 100A, a light splitting unit DC, at least two light valves LV, and a projection lens PL. For example, in this embodiment, the number of light valves LV is three, which are respectively light valves LV1 , LV2 , and LV3 , but the present invention is not limited thereto. In this embodiment, the light valve LV is, for example, a digital micro-mirror device (DMD), but the invention is not limited thereto. In other embodiments, it may also be a liquid-crystal-on-silicon panel (LCOS panel), a liquid crystal panel (Liquid Crystal Panel, LCD) or other beam modulators.

Specifically, as shown in FIG. 1A , the illumination system 100A is used to provide an illumination beam 70 and includes an excitation light source 110 , a wavelength conversion module 120 , a first dichroic element 130 and a light transfer module 140 . The excitation light source 110 is used for emitting an excitation beam 50 . For example, in this embodiment, the excitation light source 110 is a blue laser light source, and the excitation beam 50 is a blue laser beam. The excitation light source 110 may include, for example, a plurality of blue laser diodes (not shown) arranged in an array, but the invention is not limited thereto.

Specifically, as shown in FIG. 1A , in this embodiment, the first dichroic element 130 is disposed on the transmission path of the excitation light beam 50 and is located between the excitation light source 110 and the wavelength conversion module 120 . Specifically, the first dichroic element 130 may be a dichroic element, a partially penetrating and partially reflective element, a polarization splitting element, or other various elements capable of separating light beams. For example, in this embodiment, the first dichroic element 130 is, for example, a dichroic mirror with yellow reflection (Dichroic Mirror with Yellow reflection), which allows blue light to pass through and provides reflection for yellow light. Therefore, the first dichroic element 130 can transmit the blue excitation light beam 50 , so that the excitation light beam 50 of the excitation light source 110 can pass through the first dichroic element 130 to the wavelength conversion module 120 .

Further, as shown in FIG. 1A to FIG. 1C , in this embodiment, the wavelength conversion module 120 is located on the transmission path of the excitation beam 50 and has an annular wavelength conversion region OT and a non-conversion region NT. For example, as shown in FIG. 1B , in this embodiment, the ring-shaped wavelength conversion region OT can be an O-ring. Further, as shown in FIG. 1A and FIG. 1B , in this embodiment, when the excitation beam 50 is delivered to the wavelength conversion module 120 , the excitation beam 50 forms a spot SP on the wavelength conversion module 120 . Next, a first part of the excitation beam 50 is incident on the ring-shaped wavelength conversion region OT so that at least part of the light spot SP is located on the ring-shaped wavelength conversion region OT, and the first part of the excitation beam 50 is converted into a first color light 60Y, A second part of the excitation beam 50 is incident on the non-conversion region NT of the wavelength conversion module 120 so that at least part of the light spot SP is located on the non-conversion region NT, and the second part of the excitation beam 50 forms a second color light 60B. For example, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

The conversion process of the first color light 60Y and the second color light 60B will be further explained below.

For example, as shown in FIG. 1B and FIG. 1C , in this embodiment, the wavelength conversion module 120 includes a substrate 121 , an annular light scattering layer 122 and an annular wavelength conversion layer 123 . In this embodiment, the substrate 121 is, for example, a transparent substrate. Specifically, in this embodiment, the ring-shaped wavelength conversion layer 123 is located on the substrate 121 and is disposed corresponding to the ring-shaped wavelength conversion region OT. For example, in this embodiment, the wavelength conversion module 120 is, for example, a phosphor wheel (Phosphor Wheel), and the material of the ring-shaped wavelength conversion layer 123 includes a phosphor that can excite a yellow beam, so that the excitation beam 50 can be converted For yellow light. In other words, in this embodiment, the first color light 60Y converted from the excitation beam 50 through the annular wavelength conversion region OT is yellow light. For example, in this embodiment, the first colored light 60Y is a broad-spectrum colored light, and the difference between its dominant wavelength and the dominant wavelength of the excitation beam 50 (that is, the dominant wavelength of the first colored light 60Y minus the dominant wavelength of the excitation beam 50 difference) will be greater than or equal to 20 nm. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

On the other hand, as shown in FIG. 1C , the annular light-scattering layer 122 is located on the substrate 121 , and the annular light-scattering layer 122 is located between the substrate 121 and the annular wavelength conversion layer 123 . On the other hand, as shown in FIG. 1B and FIG. 1C, the ring-shaped wavelength conversion layer 123 does not completely cover the ring-shaped light-scattering layer 122, and the part of the ring-shaped light-scattering layer 122 that is not blocked by the ring-shaped wavelength conversion layer 123 can be placed on the substrate. A first annular astigmatism area OD1 and a second annular astigmatism area OD2 are formed on 121 . That is to say, as shown in FIG. 1B, the first annular astigmatism area OD1 and the second annular astigmatism area OD2 are located on the substrate 121, and the annular wavelength conversion layer 123 corresponding to the annular wavelength conversion area OT is located on the first annular Between the astigmatism area OD1 and the second annular astigmatism area OD2. Moreover, the annular wavelength conversion layer 123 surrounds the first annular astigmatism area OD1 and is surrounded by the second annular astigmatism area OD2 .

Further, as shown in FIG. 1B , in this embodiment, the first annular astigmatism area OD1 and the second annular astigmatism area OD2 correspond to the non-conversion area NT of the wavelength conversion module 120 . In this way, since the first annular astigmatism area OD1 and the second annular astigmatism area OD2 can destroy the coherence of the laser beam, and have the function of eliminating laser speckle (Laser Speckle), when the excitation beam 50 passes through the first annular astigmatism When the region OD1 and the second annular astigmatism region OD2 are formed, blue light can be formed and the phenomenon of laser speckle can be eliminated. In other words, in this embodiment, the second color light 60B formed through the non-converting region NT is the same color as the exciting light beam 50 , that is, blue light.

Specifically, as shown in FIG. 1A, in this embodiment, since the excitation light beam 50 passes through the annular wavelength conversion region OT and the non-conversion region NT of the wavelength conversion module 120 at the same time, the first color light 60Y and the second color light 60B emits light from the wavelength conversion module 120 at the same time. Next, as shown in FIG. 1A, in this embodiment, the wavelength conversion module 120 reflects the first color light 60Y back to the first dichroic element 130, and the second color light 60B is transmitted to the light source after passing through the wavelength conversion module 120. Delivery module 140 .

Specifically, as shown in FIG. 1A , in this embodiment, the optical transmission module 140 is located on the transmission path of the second color light 60B, and is used to transmit the second color light 60B emitted from the wavelength conversion module 120 to the first color separation Element 130. For example, in this embodiment, the light transmission module 140 may include a plurality of reflective elements (not labeled) to transmit the second color light 60B back to the first dichroic element 130 , but the invention is not limited thereto.

Next, as shown in FIG. 1A , in this embodiment, the lighting system 100A further includes a light homogenizing element 150 located on the transmission paths of the first color light 60Y and the second color light 60B. When the first color light 60Y and the second color light 60B are transmitted to the first dichroic element 130, since the first dichroic element 130 reflects yellow light and transmits blue light, the second color light 60B passes through the first dichroic element. 130 , and after the first color light 60Y is reflected by the first dichroic element 130 , the light homogenizing element 150 receives the first color light 60Y and the second color light 60B from the first dichroic element 130 . In this embodiment, the light homogenizing element 150 is, for example, an integration rod, but the invention is not limited thereto. In this way, when the first color light 60Y and the second color light 60B from the wavelength conversion module 120 are delivered to the light homogenizing element 150 , the light homogenizing element 150 can homogenize the first color light 60Y and the second color light 60B to output The light homogenizing element 150 forms the illumination beam 70 and passes it to the light valve LV.

Next, as shown in FIG. 1A , in this embodiment, the splitting and combining unit DC is located on the transmission path of the illuminating beam 70 and is used to convert the illuminating beam 70 into a plurality of sub-illuminating beams 70R, 70G, 70B. For example, as shown in FIG. 1A , the splitting and combining unit DC may include a plurality of dichroic mirrors DM1 and DM2. When the illuminating beam 70 passes through different dichroic mirrors DM1 and DM2, it can be sequentially divided into sub-illuminating beams 70R. , 70G, and 70B, it is transmitted to the subsequent corresponding light valves LV, that is, each light valve LV1, LV2, and LV3.

Specifically, as shown in FIG. 1A , in this embodiment, each light valve LV1 , LV2 , LV3 is respectively located on the transmission path of a plurality of sub-illumination beams 70R, 70G, 70B, and is used to direct the corresponding plurality of sub-illumination beams to 70R, 70G, 70B are converted into a plurality of image beams 80R, 80G, 80B. Moreover, the projection lens PL is located on the transmission path of the plurality of image beams 80R, 80G, 80B, and is suitable for converting the plurality of image beams 80R, 80G, 80B into a projection beam 90, and projecting it onto a screen (not shown drawing) to form an image screen. For example, since each sub-illumination beam 70R, 70G, 70B converges on the corresponding light valve LV1, LV2, LV3 respectively, the light valve LV1, LV2, LV3 can convert the corresponding sub-illumination beam 70R, 70G, 70B into different The color image light beams 80R, 80G, 80B, these image light beams 80R, 80G, 80B from the light valves LV1, LV2, LV3 will be respectively transmitted to the projection lens PL through the light splitting unit DC, so the projected image picture It can become a color picture. In this way, the illumination system 100A and the projection device 100 can convert a part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the configuration of the annular wavelength conversion region OT of the wavelength conversion module 120, while the other A part forms the second color light 60B. In this way, the illumination system 100A and the projection device 100 can generate blue, green, and red color lights with only one excitation light source 110 , and have a simple structure and a concise optical path layout. Moreover, since the light path layout of the illumination system 100A and the projection device 100 can be effectively simplified, the layout flexibility of other components in the system can also be increased at the same time. In addition, since the lighting system 100A and the projection device 100 only need to be equipped with one exciting light source 110, the energy of the light source will be concentrated in one place, which can reduce the design complexity of the cooling module and help increase the design flexibility of the system layout. . In addition, since the illumination system 100A and the wavelength conversion module 120 of the projection device 100 also have the function of astigmatism, there is no need to additionally install astigmatism elements to eliminate laser speckle, and the use of optical components can be reduced, which can more effectively achieve cost savings and Form a simple system structure. In addition, in other embodiments, a reflective layer may also be provided between the annular wavelength conversion layer 123 and the substrate 121, so that the wavelength conversion module can effectively reflect the first color light 60Y back to the first dichroic element 130, as follows Another example will be given for further explanation.

FIG. 1D is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . In this embodiment, the wavelength conversion module 120D of FIG. 1D is similar to the wavelength conversion module 120 of FIG. 1B , and the differences are as follows. Please refer to FIG. 1D, in this embodiment, the wavelength conversion module 120D further includes a reflective layer RL, and the reflective layer RL is disposed between the ring-shaped wavelength conversion layer 123 and the substrate 121, so that the first part of the excitation beam 50 is converted into The first color light 60Y can be effectively reflected back to the first dichroic element 130 through the reflective layer RL. The reflective layer RL is provided by, for example, coating. On the other hand, the second part of the excitation light beam 50 to form the second color light 60B can still pass through the first annular astigmatism area OD1 and the second annular astigmatism area OD2 formed by the annular light scattering layer 122 and the substrate 121, and is passed on to subsequent optics. FIG. 1E is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . In this embodiment, the wavelength conversion module 120E of FIG. 1E is similar to the wavelength conversion module 120D of FIG. 1D , and the differences are as follows. Please refer to FIG. 1E , in this embodiment, the annular wavelength conversion layer 123 of the wavelength conversion module 120E is not covered on the annular light-scattering layer 122 , but is located in the first annular light-scattering area OD1 formed by the annular light-scattering layer 122 and between the second annular astigmatism area OD2. In other words, the annular wavelength conversion layer 123 of the wavelength conversion module 120E is located in the first annular astigmatism region OD1 and the second annular light astigmatism area OD1 formed by the annular light scattering layer 122 in the radial direction from the axis of the substrate 121 to the edge of the substrate 121. Between the two annular astigmatism zones OD2. The reflective layer RL is disposed between the annular wavelength conversion layer 123 and the substrate 121 . In this way, the wavelength conversion module 120E can also use the reflective layer RL so that the first part of the excitation light beam 50 is converted into the first color light 60Y and then effectively reflected back to the first dichroic element 130 through the reflective layer RL. On the other hand, the second part of the excitation light beam 50 to form the second color light 60B can still pass through the first annular astigmatism area OD1 and the second annular astigmatism area OD2 formed by the annular light scattering layer 122 and the substrate 121, and is passed on to subsequent optics. FIG. 1F is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . In this embodiment, the wavelength conversion module 120F of FIG. 1F is similar to the wavelength conversion module 120D of FIG. 1D , and the differences are as follows. Please refer to FIG. 1F. In this embodiment, the wavelength conversion module 120F does not have the annular light-scattering layer 122. Instead, scattering particles PA are added to the substrate 121F to form a The first annular astigmatism area OD1 and the second annular astigmatism area OD2 of the wavelength conversion module 120F. That is to say, as shown in FIG. 1F, the first annular astigmatism area OD1 and the second annular astigmatism area OD2 are formed by the substrate 121F, and the annular wavelength conversion layer 123 also surrounds the first annular astigmatism area OD1, and Surrounded by the second annular astigmatism area OD2. In this way, the wavelength conversion module 120F can also use the reflective layer RL so that the first part of the excitation light beam 50 is converted into the first color light 60Y and then effectively reflected back to the first dichroic element 130 through the reflective layer RL. On the other hand, the second part of the excitation light beam 50 to form the second color light 60B can still pass through the substrate 121F and the first annular astigmatism area OD1 and the second annular astigmatism area OD2 formed by the scattering particles PA in the substrate 121F, and is passed on to subsequent optical elements. In this way, in the foregoing embodiments, since the wavelength conversion modules 120D, 120E, and 120F are similar to the wavelength conversion module 120 in FIG. Similar effects and advantages of the wavelength conversion module 120 will not be repeated here. Moreover, when the wavelength conversion modules 120D, 120E, and 120F are applied to the lighting system 100A and the projection device 100 mentioned above, the lighting system 100A and the projection device 100 can also achieve similar effects and advantages, and will not be repeated here.

FIG. 2A is a schematic structural diagram of another lighting system shown in FIG. 1A . The lighting system 200A of FIG. 2A is similar to the lighting system 100A of FIG. 1A with the differences described below. In this embodiment, the lighting system 200A further includes an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y. For example, in this embodiment, the auxiliary light source AL is, for example, a red laser light source or a red light emitting diode light source, and the auxiliary light beam 60R is red light.

Specifically, as shown in FIG. 2A , in this embodiment, the first dichroic element 130 is, for example, a dichroic mirror (DMGO) having a green-orange light reflection effect, which allows blue light and red light to pass through, and Green-orange light provides reflection. In addition, the light transmission module 140 of the lighting system 200A includes a second dichroic element 241 located on the transmission path of the second color light 60B and the auxiliary light beam 60R. In this embodiment, the second dichroic element 241 is, for example, a dichroic mirror (DMB) having a blue light reflection function, which allows red light to pass through and provides reflection for blue light.

In this way, the excitation light beam 50 of the excitation light source 110 can still pass through the first dichroic element 130 to be transmitted to the wavelength conversion module 120 . On the other hand, the auxiliary light beam 60R of the auxiliary light source AL can be transmitted to the first dichroic element 130 by passing through the second dichroic element 241 , and the second color light 60B can still be transmitted to the first dichroic element 130 through the light transmission module 140 . Color element 130. When the first color light 60Y from the wavelength conversion module 120 and the second color light 60B and the auxiliary beam 60R from the light delivery module 140 are all delivered to the first color separation element 130, the first color separation element 130 can make the second color light 60B passes through the auxiliary light beam 60R, and after reflecting part of the first color light 60G, guides the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B to the light homogenizing element 150 . In this embodiment, part of the first color light 60Y (yellow light) will be reflected by the first dichroic element 130 to form part of the first color light 60G such as green light. Therefore, the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B can combine to form the illumination light beam 70 after passing through the first dichroic element 130 and the second dichroic element 241 .

In this way, the lighting system 200A can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 200A has the same wavelength conversion module 120 structure as the lighting system 100A shown in FIG. No longer. Moreover, when the lighting system 200A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 2B is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 200B of FIG. 2B is similar to the lighting system 200A of FIG. 2A with the differences described below. In this embodiment, the first dichroic element 130 is, for example, a dichroic mirror (DMY) with a yellow light reflection effect, and the second dichroic element 241 is located between the auxiliary beam 60R and the first color from the first dichroic element 130 The transmission path of the light 60Y and the second color light 60B. Moreover, in this embodiment, the second dichroic element 241 is, for example, a dichroic mirror (DMR) having a red light reflection function, which allows blue light and green light to pass through, and provides reflection for red light.

In this way, when the first color light 60Y, the second color light 60B and the auxiliary light beam 60R are delivered to the second color separation element 241, the second color separation element 241 can make part of the first color light 60G from the first color separation element 130 It penetrates the second color light 60B and reflects the auxiliary light beam 60R from the auxiliary light source AL, and guides the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B to the light homogenizing element 150 . Therefore, the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B can combine to form the illumination light beam 70 after passing through the first dichroic element 130 and the second dichroic element 241 .

In this way, the illumination system 200B can increase the proportion of red light in the illumination beam 70 through the configuration of the auxiliary light source AL, thereby enhancing the red color performance of the projected image. In addition, in this embodiment, since the lighting system 200B has the same wavelength conversion module 120 structure as the lighting system 100A in FIG. No longer. Moreover, when the lighting system 200B is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 3A is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 300A of FIG. 3A is similar to the lighting system 100A of FIG. 1A with the differences described below. In this embodiment, the first dichroic element 130 is, for example, a dichroic mirror (DMB) having a blue light reflection function, which allows the yellow light to pass through and provides reflection for the blue light. Therefore, as shown in FIG. 3A , the first dichroic element 130 reflects the blue excitation beam 50 , and the wavelength conversion module 120 can be disposed on the transmission path of the excitation beam 50 reflected by the first dichroic element 130 . In this way, the excitation light beam 50 from the excitation light source 110 can be delivered to the wavelength conversion module 120 through the first dichroic element 130 .

On the other hand, as shown in FIG. 3A, when the first color light 60Y and the second color light 60B are transmitted to the first dichroic element 130 again, since the first dichroic element 130 will reflect blue light and transmit yellow light, Therefore, the first color light 60Y will pass through the first dichroic element 130, and the second color light 60B will be transmitted to the At the light homogenizing element 150 , an illuminating beam 70 can be formed.

In this embodiment, since the lighting system 300A has the same wavelength conversion module 120 structure as the lighting system 100A in FIG. repeat. Moreover, when the lighting system 300A is applied to the above-mentioned projection device 100 , the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 3B is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 300B of FIG. 3A is similar to the lighting system 300A of FIG. 3A with the differences described below. In this embodiment, the lighting system 300B further includes an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y. For example, in this embodiment, the auxiliary light beam 60R is red light.

Specifically, as shown in FIG. 3B , in this embodiment, the first dichroic element 130 is, for example, a dichroic mirror (DMBR) having red light and blue light reflection functions, so that green light can pass through and blue light And red light provides reflection. In addition, the light transmission module 140 of the illumination system 300B includes a second dichroic element 241 , and the second dichroic element 241 is located on the transmission path of the second color light 60B and the auxiliary light beam 60R. In this embodiment, the second dichroic element 241 is, for example, a dichroic mirror (DMB) having a blue light reflection function, which allows red light to pass through and provides reflection for blue light.

In this way, the excitation light beam 50 from the excitation light source 110 can still be transmitted to the wavelength conversion module 120 through the reflection of the first dichroic element 130 . On the other hand, the auxiliary light beam 60R of the auxiliary light source AL can be transmitted to the first dichroic element 130 by passing through the second dichroic element 241 , and the second color light 60B can still be reflected to the first dichroic element 130 through the light transmission module 140 . Color element 130. When the first color light 60Y from the wavelength conversion module 120 and the second color light 60B and the auxiliary light beam 60R from the light delivery module 140 are all delivered to the first color separation element 130, the first color separation element 130 can make part of the first color light The colored light 60G passes through and reflects the second colored light 60B and the auxiliary light beam 60R, and guides the auxiliary light beam 60R, part of the first colored light 60G and the second colored light 60B to the light homogenizing element 150 . Therefore, the auxiliary beam 60R, part of the first color light 60G and the second color light 60B can be combined after passing through the first dichroic element 130 and the second dichroic element 241 and uniformized by the light homogenizing element 150 to form an illumination beam 70.

In this way, the lighting system 300B can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 300B has the same structure of the wavelength conversion module 120 as the lighting system 100A in FIG. No longer. Moreover, when the lighting system 300B is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 3C is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 300C of FIG. 3C is similar to the lighting system 300B of FIG. 3B with the differences described below. In this embodiment, the first dichroic element 130 is, for example, a dichroic mirror (DMB) with blue light reflection, which allows yellow light to pass through and provides reflection for blue light, and the second dichroic element 241 is located at the auxiliary beam 60R and the transmission paths of the first color light 60Y and the second color light 60B from the first dichroic element 130 . Moreover, in this embodiment, the second dichroic element 241 is, for example, a dichroic mirror (DMR) having a red light reflection function, which allows blue light and green light to pass through, and provides reflection for red light.

In this way, when the first color light 60Y, the second color light 60B and the auxiliary light beam 60R are delivered to the second color separation element 241, the second color separation element 241 can make part of the first color light 60G from the first color separation element 130 It penetrates the second color light 60B and reflects the auxiliary light beam 60R from the auxiliary light source AL, and guides the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B to the light homogenizing element 150 . Therefore, the auxiliary beam 60R, part of the first color light 60G and the second color light 60B can be combined after passing through the first dichroic element 130 and the second dichroic element 241 and uniformized by the light homogenizing element 150 to form an illumination beam 70.

In this way, the lighting system 300C can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 300C has the same wavelength conversion module 120 structure as the lighting system 100A in FIG. No longer. Moreover, when the lighting system 300C is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 4A is a schematic front view of another wavelength conversion module in FIG. 1A . FIG. 4B is a schematic cross-sectional view of the wavelength conversion module in FIG. 4A . The wavelength conversion module 420A of FIG. 4A is similar to the wavelength conversion module 120 of FIG. 1B , and the differences are as follows. In this embodiment, the ring-shaped wavelength conversion layer 423A of the wavelength conversion module 420A can have a plurality of dot-like microstructures DA, so that a part of the excitation light beam 50 from the excitation light source 110 can be converted into the first color light 60Y.

For example, as shown in FIG. 4B , the multiple dot-like microstructures DA of the ring-shaped wavelength conversion layer 423A may be made of wavelength conversion materials, and there are gaps CA without wavelength conversion materials between the multiple dot-like microstructures DA. When the partial excitation light beam 50 is incident on the plurality of point microstructures DA, the partial excitation light beam 50 is converted into the first color light 60Y. These gaps CA correspond to the non-converting region NT of the wavelength conversion module 420A. When another part of the excitation beam 50 passes through the non-converting region NT (these gaps CA), it passes through the substrate 121 or the annular light scattering layer located in the non-converting region NT. 122 to emit the second color light 60B.

In this way, the wavelength conversion module 420A can convert a first part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the configuration of the annular wavelength conversion region OT, and the other second part forms Second color light 60B. For example, in this embodiment, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

Thus, in this embodiment, the wavelength conversion module 420A is similar to the wavelength conversion module 120 of FIG. I won't repeat it here. Moreover, when the wavelength conversion module 420A is applied to the aforementioned lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100 , it can also make the lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100 Similar effects and advantages are achieved, which will not be repeated here.

FIG. 4C is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . The wavelength conversion module 420C of FIG. 4C is similar to the wavelength conversion module 120 of FIG. 4A , and the differences are as follows. In this embodiment, when the ring-shaped wavelength conversion layer 423C satisfies a light absorption condition, the second part of the excitation light beam 50 forms the second color light 60B after passing through the ring-shaped wavelength conversion layer 423C, and the light absorption condition is that the ring-shaped wavelength conversion layer 423C The volume concentration of the medium wavelength conversion material is between 30% and 85%, or the thickness of the annular wavelength conversion layer 423C is between 0.03 mm and 0.3 mm. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

In this way, the wavelength conversion module 420C can convert a first part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the configuration of the annular wavelength conversion region OT, and the other second part forms Second color light 60B. For example, in this embodiment, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

Thus, in this embodiment, the wavelength conversion module 420C is similar to the wavelength conversion module 120 of FIG. I won't repeat it here. Moreover, when the wavelength conversion module 420C is applied to the aforementioned lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100 , it can also make the lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100 Similar effects and advantages are achieved, which will not be repeated here.

FIG. 4D is a schematic front view of another wavelength conversion module in FIG. 1A . FIG. 4E is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . The wavelength conversion modules 420D and 420E in FIG. 4D and FIG. 4E are similar to the wavelength conversion modules 120 and 420A in FIG. 1B and FIG. 4A respectively, and the differences are as follows. In this embodiment, the substrate 121 of the wavelength conversion modules 420D and 420E is a scattering substrate, and the annular wavelength conversion layer 123 (or the annular wavelength conversion layer 423A) is directly disposed on the substrate 121, and the annular scattering layer can be omitted. 122 configuration. In the embodiment of FIG. 4D , the part of the substrate 121 that is not blocked by the annular wavelength conversion layer 123 can form the first annular astigmatism area OD1 inside the annular wavelength conversion layer 123 and the first annular light astigmatism region OD1 on the inner side of the annular wavelength conversion layer 123. The second annular astigmatism area OD2 is formed outside, and the first annular astigmatism area OD1 and the second annular astigmatism area OD2 correspond to the non-conversion area NT of the wavelength conversion module 420D. In the embodiment shown in FIG. 4E , the gap CA between the dot-like microstructures DA of the annular wavelength conversion layer 423A and the area of the substrate 121 below corresponds to the non-conversion region NT of the wavelength conversion module 420E.

In this way, when the excitation beam 50 is incident on the wavelength conversion modules 420D and 420E, the first part of the excitation beam 50 is converted into the first color light 60Y and the second part of the excitation beam 50 is converted into the second color light 60B via the wavelength conversion modules 420D and 420E. , so as to achieve similar effects and advantages to those of the aforementioned wavelength conversion module 120 , which will not be repeated here. Moreover, when the wavelength conversion modules 420D and 420E are applied to the aforementioned lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100, the lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection The device 100 achieves similar effects and advantages, which will not be repeated here.

4F and 4G are schematic cross-sectional views of various wavelength conversion modules in FIG. 1A . The wavelength conversion modules 420F and 420G in FIG. 4F and FIG. 4G are similar to the wavelength conversion modules 120 and 420A in FIG. 1B and FIG. 4A respectively, and the differences are as follows. In this embodiment, the outer diameter edges of the ring-shaped wavelength conversion layers 423F and 423G in FIG. 4F and FIG. In the case of the modules 420F and 420G, a part of the excitation beam 50 is irradiated on the ring-shaped wavelength conversion layers 423F and 423G, and the other part of the excitation beam 50 is not irradiated on the ring-shaped wavelength conversion layers 423F and 423G, for example, it is irradiated outside the substrate 121 . In this way, after the excitation beam 50 is incident on the wavelength conversion modules 420F and 420G, the first part of the excitation beam 50 is converted into the first color light 60Y and the second part of the excitation beam 50 is converted into the second color light 60B via the wavelength conversion modules 420F and 420G. , so as to achieve effects and advantages similar to those of the aforementioned wavelength conversion modules 120 and 420A, which will not be repeated here. Moreover, when the wavelength conversion modules 420F and 420G are applied to the aforementioned lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection device 100, the lighting systems 100A, 200A, 200B, 300A, 300B, 300C and the projection The device 100 achieves similar effects and advantages, which will not be repeated here.

FIG. 5A is a schematic structural diagram of another lighting system in FIG. 1A . FIG. 5B is a schematic top view of a wavelength conversion module in FIG. 5A . FIG. 5C is a schematic cross-sectional view of the wavelength conversion module in FIG. 5B . The lighting system 500A of FIG. 5A is similar to the lighting system 100A of FIG. 1A with the differences described below. In this embodiment, the lighting system 500A further includes a curved reflective element 540 and a first light homogenizing element 550A. Specifically, as shown in FIG. 5A, in this embodiment, the curved reflective element 540 is located between the excitation light source 110 and the wavelength conversion module 520, wherein the excitation light beam 50 from the excitation light source 110 passes through a light on the curved reflective element 540. After passing through the region TR, it is passed to the wavelength conversion module 520 . For example, in this embodiment, the light passing region TR1 is formed by, for example, forming a through hole in the curved reflective element 540, or coating a part of the curved reflective element 540 with a dichroic film that allows blue light to pass through. .

In addition, in this embodiment, the wavelength conversion module 520 in FIG. 5B is similar to the wavelength conversion module 120 in FIG. 1B , and the differences are as follows. The substrate 521 of the wavelength conversion module 520 is a reflective substrate, and the annular light-scattering layer 522 can be made of a diffuse reflective material to form an annular reflective scattering layer, and the annular light-scattering layer 522 is located between the reflective substrate 521 and the annular wavelength conversion layer Between 123. In other words, in this embodiment, the annular light-scattering layer 522 of the wavelength conversion module 520 further includes a first annular reflective region OR1 and a second annular reflective region OR2, and the first annular reflective region OR1 and the second annular reflective region The reflection region OR2 is located on the substrate 521 and corresponds to the non-conversion region NT of the wavelength conversion module 520 . The annular wavelength conversion layer 123 is located between the first annular reflective region OR1 and the second annular reflective region OR2, and the annular wavelength conversion layer 123 surrounds the first annular reflective region OR1 and is surrounded by the second annular reflective region OR2 surrounded by. In this way, since the first annular reflective region OR1 and the second annular reflective region OR2 can also destroy the coherence of the laser beam, and have the function of eliminating laser speckle, when the excitation beam 50 passes through the first annular reflective region OR1 and In the case of the second annular reflection region OR2, blue light can be formed and laser speckle phenomenon can be eliminated.

In this way, the wavelength conversion module 520 can also make a first excitation beam 50 from the same excitation light source 110 through the arrangement of the annular wavelength conversion region OT, the first annular reflection region OR1 and the second annular reflection region OR2. A part is converted into the first color light 60Y by the ring-shaped wavelength conversion region OT, and another second part forms the second color light 60B through the first ring-shaped reflective region OR1 and the second ring-shaped reflective region OR2. For example, in this embodiment, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

Further, as shown in FIG. 5A , in this embodiment, the curved reflective element 540 is an elliptical reflective element, and the excitation beam 50 from the excitation light source 110 passes through the light passing region TR1 of the curved reflective element 540 and converges to the curved reflective element. 540 , the wavelength conversion module 520 is located on the focal point F1 , and the light incident end IE of the first light homogenizing element 550A is located on the other focal point F2 of the curved reflective element 540 . After the excitation beam 50 passes through the wavelength conversion module 520 to generate the first color light 60Y and the second color light 60B, the first color light 60Y and the second color light 60B from the wavelength conversion module 520 can be reflected to the first color light 60Y through the curved reflective element 540 A light incident end IE of the light homogenizing element 550A. In this embodiment, the first light homogenizing element 550A can be an integrating rod, but the invention is not limited thereto. In this way, when the first color light 60Y and the second color light 60B from the wavelength conversion module 520 are delivered to the first light homogenizing element 550A, the first light homogenizing element 550A can make the first color light 60Y and the second color light 60B After homogenization, an illumination beam 70 is formed.

In this embodiment, since the wavelength conversion module 520 has a similar structure to the wavelength conversion module 120 in FIG. 2A , the wavelength conversion module 520 can achieve similar effects and advantages as those of the aforementioned wavelength conversion module 120, and details will not be repeated here. . Moreover, since the lighting system 500A adopts the wavelength conversion module 520 , it can also achieve similar effects and advantages as the lighting system 100A mentioned above, so it will not be repeated here. Moreover, when the lighting system 500A is applied to the projection device 100 , the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 5D is a schematic top view of another wavelength conversion module of FIG. 5A . FIG. 5E is a schematic cross-sectional view of the wavelength conversion module in FIG. 5D . The wavelength conversion module 520D in FIG. 5D and FIG. 5E is similar to the wavelength conversion module 420A in FIG. 4A , and the differences are as follows. In this embodiment, the substrate 521 of the wavelength conversion module 520D is a reflective substrate, and the annular light scattering layer 522 can be made of a diffuse reflective material to form an annular reflective scattering layer.

In this way, the wavelength conversion module 520D can convert a first part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the arrangement of multiple point-like microstructures DA in the annular wavelength conversion region OT. , and another second part passes through the non-converting region NT (the gaps CA) to form the second color light 60B. For example, in this embodiment, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

In this embodiment, since the wavelength conversion module 520D has a similar structure to the wavelength conversion module 420A in FIG. 4A , the wavelength conversion module 520D can achieve similar effects and advantages as the aforementioned wavelength conversion module 420A, and details will not be repeated here. . Moreover, when the wavelength conversion module 520D is applied to the lighting system 500A and the projection device 100 mentioned above, the lighting system 500A and the projection device 100 can also achieve similar effects and advantages, and details will not be repeated here.

FIG. 5F is a schematic cross-sectional view of another wavelength conversion module in FIG. 1A . The wavelength conversion module 520F of FIG. 5F is similar to the wavelength conversion module 520D of FIG. 5D , and the differences are as follows. In this embodiment, when the ring-shaped wavelength conversion layer 523F satisfies a light absorption condition, the second part of the excitation light beam 50 forms the second color light 60B after passing through the ring-shaped wavelength conversion layer 523F, and the light absorption condition is that the ring-shaped wavelength conversion layer 523F The volume concentration of the medium wavelength conversion material is between 30% and 85%, or the thickness of the annular wavelength conversion layer 523F is between 0.03 mm and 0.3 mm. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

In this way, the wavelength conversion module 520F can convert a first part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the configuration of the annular wavelength conversion region OT, and the other second part forms Second color light 60B. For example, in this embodiment, the ratio of the second part of the excitation beam 50 to the excitation beam 50 ranges from 5% to 30%. It should be noted that the numerical ranges herein are used for illustration only, and are not intended to limit the present invention.

In this embodiment, since the wavelength conversion module 520F has a similar structure to the wavelength conversion module 520D in FIG. 5D , the wavelength conversion module 520F can achieve similar effects and advantages as the aforementioned wavelength conversion module 520D, and details will not be repeated here. . Moreover, when the wavelength conversion module 520F is applied to the lighting system 500A and the projection device 100 mentioned above, the lighting system 500A and the projection device 100 can also achieve similar effects and advantages, and details will not be repeated here.

FIG. 6A is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 600A of FIG. 6A is similar to the lighting system 500A of FIG. 5A with the differences described below. In this embodiment, the lighting system 600A further includes an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y, wherein the auxiliary light beam 60R passes through the curved surface reflective element 540, and is transmitted to the entrance of the first light homogenizing element 550A. Optical end IE.

For example, as shown in FIG. 6A , in this embodiment, the lighting system 600A further includes a third dichroic element 640 disposed on the transmission path of the auxiliary light beam 60R. The third dichroic element 640 is, for example, a dichroic mirror (DMR) having a red light reflection function, which allows blue light to pass through and provides reflection for red light. The light passing region TR1 is formed by, for example, forming a through hole in the curved reflective element 540 , or coating a part of the curved reflective element 540 with a dichroic film that allows blue light and red light to pass through. In this way, the auxiliary light beam 60R can pass through the light passing region TR1 of the curved reflective element 540 through the transmission of the third dichroic element 640, and then be reflected by the wavelength conversion module 520 and the curved reflective element 540 in sequence, and then be transmitted to the first light beam 60R. The light incident end IE of the homogenizing element 550A. In this way, the auxiliary light beam 60R, the first color light 60Y and the second color light 60B can combine to form the illumination light beam 70 after passing through the first light homogenizing element 550A.

In this way, the configuration of the auxiliary light source AL in the lighting system 600A can increase the proportion of red light in the lighting beam 70 , thereby improving the red color performance of the projected image. In addition, in this embodiment, since the illumination system 600A can also adopt the structure of the wavelength conversion module 520 (or the wavelength conversion modules 520D, 520F) that can be adopted by the aforementioned illumination system 500A, the illumination system 600A can achieve the same structure as the aforementioned Similar effects and advantages of the lighting system 500A will not be repeated here. Moreover, when the lighting system 600A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 6B is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 600B of FIG. 6B is similar to the lighting system 600A of FIG. 6A with the differences described below. In this embodiment, the curved reflective element 540 has another light passing region TR2 disposed on the transmission path of the auxiliary light beam 60R. Specifically, as shown in FIG. 6B , in this embodiment, the auxiliary light beam 60R can directly pass through the light passing region TR2 to the light incident end IE of the first light homogenizing element 550A. In this way, the auxiliary light beam 60R, the first color light 60Y and the second color light 60B from the wavelength conversion module 520 and the curved reflective element 540 can be combined to form the illumination light beam 70 after passing through the first light homogenizing element 550A.

In this way, the lighting system 600B can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 600B can also adopt the structure of the wavelength conversion module 520 (or the wavelength conversion modules 520D, 520F) that can be used in the aforementioned lighting system 600A, the lighting system 600B can achieve the same structure as the aforementioned Similar effects and advantages of the lighting system 600A will not be repeated here. Moreover, when the lighting system 600B is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 6C is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 600C of FIG. 6C is similar to the lighting system 500A of FIG. 5A with the differences described below. In this embodiment, the lighting system 600C further includes an auxiliary light source AL, a second light homogenizing element 550B and a third dichroic element 640 . The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y.

Specifically, as shown in FIG. 6C , the second light homogenizing element 550B is located on the transmission path of the auxiliary light beam 60R, and is suitable for homogenizing the auxiliary light beam 60R. On the other hand, the third dichroic element 640 is located on the transmission path of the auxiliary light beam 60R and the first color light 60Y and the second color light 60B from the first light homogenizing element 550A. For example, in this embodiment, the third dichroic element 640 can reflect the auxiliary light beam 60R and allow part of the first color light 60G and the second color light 60B to pass through, but the invention is not limited thereto. In another embodiment, the third dichroic element 640 can transmit the auxiliary light beam 60R and reflect part of the first color light 60G and the second color light 60B. In this way, part of the first color light 60G and the second color light 60B from the first light homogenizing element 550A and the auxiliary beam 60R from the second light homogenizing element 550B can form an illumination beam 70 after passing through the third dichroic element 640 .

In this way, the lighting system 600C can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 600C can also adopt the structure of the wavelength conversion module 520 (or the wavelength conversion modules 520D, 520F) that can be used in the aforementioned lighting system 500A, the lighting system 600C can achieve the same structure as the aforementioned Similar effects and advantages of the lighting system 500A will not be repeated here. Moreover, when the lighting system 600C is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 7A is a schematic structural diagram of another lighting system in FIG. 1A . FIG. 7B is a schematic top view of a light splitting element in FIG. 7A . In this embodiment, the illumination system 700A includes the excitation light source 110 , the aforementioned wavelength conversion module 520 (or the wavelength conversion modules 520D and 520F ), a fourth dichroic element 730 and the light homogenizing element 150 . For the structural details of the excitation light source 110 , the wavelength conversion module 520 (or the wavelength conversion modules 520D and 520F ) and the light homogenizing element 150 , please refer to the relevant paragraphs above, and details will not be repeated here.

Specifically, as shown in FIG. 7A, in this embodiment, the fourth dichroic element 730 is located between the excitation light source 110 and the wavelength conversion module 520, wherein the fourth dichroic element 730 has a first region 730A and a first The second area 730B, the second area 730B surrounds the first area 730A. For example, in this embodiment, the first region 730A of the fourth dichroic element 730 can be formed by a through hole, or coated with a dichroic film that allows blue light to pass through and reflects yellow light. On the other hand, the second region 730B of the fourth dichroic element 730 can be coated with a reflective coating to reflect blue light and yellow light.

As such, as shown in FIG. 7A , in the present embodiment, the first region 730A of the fourth dichroic element 730 can pass the excitation beam 50 to the wavelength conversion module 520 . The excitation light beam 50 incident on the wavelength conversion module 520 is converted into the first color light 60Y and the second color light 60B and then reflected back to the fourth dichroic element 730 . Then, the first region 730A of the fourth dichroic element 730 reflects the first color light 60Y, and the second region 730B reflects the first color light 60Y and the second color light 60B from the wavelength conversion module 520 . In this way, the first color light 60Y and the second color light 60B can be guided to the light homogenizing element 150 through the fourth dichroic element 730 to form the illumination beam 70 .

In addition, as shown in FIG. 7A , in this embodiment, the lighting system 700A may optionally include an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y. In this embodiment, the auxiliary light beam 60R is, for example, red light. When the lighting system 700A includes the auxiliary light source AL, the first area 730A of the fourth dichroic element 730 can be a through hole, or a dichroic film that can transmit blue light and red light and reflect green light can be coated on it. The second region 730B of the fourth dichroic element 730 can optionally be coated with a dichroic film that allows red light to pass through and reflect light beams of other colors. In this way, the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B are guided to the light homogenizing element 150 after passing through the fourth dichroic element 730 , and combined to form the illumination light beam 70 .

In this way, in this embodiment, since the lighting system 700A can also adopt the structure of the wavelength conversion module 520 (or the wavelength conversion modules 520D and 520F) that can be used in the aforementioned lighting system 500A, the lighting system 700A can achieve the same structure as that of the aforementioned lighting system 500A. Similar effects and advantages to the aforementioned lighting system 500A will not be repeated here. Moreover, when the lighting system 700A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here. In addition, the configuration of the auxiliary light source AL in the lighting system 700A can increase the proportion of red light in the lighting beam 70 , thereby improving the red color performance of the projected image.

FIG. 8A is a schematic structural diagram of another lighting system in FIG. 1A . FIG. 8B is a schematic top view of a light splitting element of FIG. 8A . The lighting system 800A of FIG. 8A is similar to the lighting system 700A of FIG. 7A with the differences described below. In this embodiment, the first region 730A of the fourth dichroic element 730 is coated with a dichroic film that can transmit yellow light and reflect blue light, and can reflect the excitation beam 50 and transmit the first color light 60Y. . The second region 730B of the fourth dichroic element 730 can be a transparent region, which can transmit the first color light 60Y and the second color light 60B from the wavelength conversion module 520 (or the wavelength conversion modules 520D, 520F).

In this way, as shown in FIG. 8A , in this embodiment, the first region 730A of the fourth dichroic element 730 can reflect the excitation beam 50 and transmit it to the wavelength conversion module 520 . The excitation light beam 50 incident on the wavelength conversion module 520 is converted into the first color light 60Y and the second color light 60B and then delivered to the fourth dichroic element 730 . After that, the first area 730A of the fourth dichroic element 730 allows the first color light 60Y to pass through, and the second area 730B allows the first color light 60Y and the second color light 60B from the wavelength conversion module 120 to pass through. In this way, the first color light 60Y and the second color light 60B can be guided to the light homogenizing element 150 through the fourth dichroic element 730 to form the illumination beam 70 .

In addition, as shown in FIG. 8A , in this embodiment, the lighting system 800A may also optionally include an auxiliary light source AL. When the lighting system 800A includes the auxiliary light source AL, the first area 730A of the fourth dichroic element 730 can be coated with a dichroic film that can transmit green light and reflect blue light and red light, and the second area 730B can be coated with There are dichroic coatings that reflect red light and allow light beams of other colors to pass through. In this way, the auxiliary light beam 60R, part of the first color light 60G and the second color light 60B are guided to the light homogenizing element 150 after passing through the fourth dichroic element 730 , and combined to form the illumination light beam 70 .

In this way, in this embodiment, since the lighting system 800A can also adopt the structure of the wavelength conversion module 520 (or the wavelength conversion modules 520D and 520F) that can be used in the aforementioned lighting system 700A, the lighting system 800A can achieve the same structure as that of the aforementioned lighting system 700A. Similar effects and advantages to the aforementioned lighting system 700A will not be repeated here. Moreover, when the lighting system 800A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here. In addition, the configuration of the auxiliary light source AL in the lighting system 800A can increase the proportion of red light in the lighting beam 70 , thereby enhancing the red color performance of the projected image.

FIG. 9A is a schematic structural diagram of another lighting system in FIG. 1A . FIG. 9B is a schematic top view of a wavelength conversion module in FIG. 9A . FIG. 9C is a schematic cross-sectional view of the wavelength conversion module in FIG. 9B . In this embodiment, the illumination system 900A of FIG. 9A is similar to the illumination system 800A of FIG. 8A , the wavelength conversion module 920 of FIG. 9B is similar to the wavelength conversion module 520 of FIG. 5B , and the differences are as follows. In the wavelength conversion module 920 of this embodiment, the annular light scattering layer 122 is replaced by a specular reflective layer 922 to form the first annular reflective region OR1 and the second annular reflective region OR2 . In addition, the lighting system 900A does not include the fourth dichroic element 730, but includes a fifth dichroic element 930A, a sixth dichroic element 930B, a first condenser lens group 940A, and a second condenser lens group 940B .

Specifically, as shown in FIG. 9A, in this embodiment, the fifth dichroic element 930A is located between the excitation light source 110 and the wavelength conversion module 920, and the first condenser lens group 940A is located between the fifth dichroic element 930A, Between the sixth dichroic element 930B and the wavelength conversion module 920 . In this embodiment, the fifth dichroic element 930A is, for example, a dichroic mirror (DMB) having a blue light reflection function. In this way, the excitation light beam 50 from the excitation light source 110 is guided to the first condensing lens group 940A by the fifth dichroic element 930A, and then obliquely incident on the wavelength conversion module 920 through the first condensing lens group 940A and then converted into the first condensing lens group 940A. A color light 60Y and a second color light 60B.

Moreover, since the wavelength conversion module 920 of this embodiment has a similar structure to the wavelength conversion module 520 in FIG. The first part is converted into the first color light 60Y, and the second part forms the second color light 60B through the configuration of the first ring-shaped reflective region OR1 and the second ring-shaped reflective region OR2. Therefore, the wavelength conversion module 920 can achieve effects and advantages similar to those of the aforementioned wavelength conversion module 520 , which will not be repeated here.

Next, as shown in FIG. 9A , in this embodiment, the sixth dichroic element 930B can be a half-reflective and semi-transmissive element (Blue Half Mirror, BHM) for blue light, so that part of the second color light 60B can pass through, and Another part of the second color light 60B is reflected, and light beams of other colors (that is, the first color light 60Y) can pass through.

In this way, since the first color light 60Y converted by the annular wavelength conversion region OT of the wavelength conversion module 920 has a relatively large divergence angle, the first color light 60Y from the wavelength conversion module 920 will obliquely incident on the first color light 60Y. Condensing lens group 940A, and pass through fifth dichroic element 930A and sixth dichroic element 930B to second converging lens group 940B.

On the other hand, the second color light 60B formed by being reflected by the first annular reflective region OR1 or the second annular reflective region OR2 of the wavelength conversion module 920 is due to the first annular reflective region OR1 and the second annular reflective region of this embodiment. The shape reflective region OR2 is made of a specular reflective layer, so the second color light 60B from the wavelength conversion module 920 will be eccentrically and obliquely incident on the first condenser lens group 940A and then transmitted to the sixth dichroic element 930B. The sixth dichroic element 930B transmits part of the second color light 60B and reflects another part of the second color light 60B. In this way, after passing through the sixth dichroic element 930B, part of the second color light 60B will be transmitted to the fifth dichroic element 930A due to reflection, and then reflected to the second condenser lens group 940B, while the other part of the second color light 60B will pass through the sixth dichroic element 930B and then be directly transmitted to the second condenser lens group 940B.

Next, as shown in FIG. 9A, in this embodiment, the second condensing lens group 940B is located in the transmission path of the second color light 60B and the first color light 60Y from the fifth dichroic element 930A and the sixth dichroic element 930B. , which is used to converge the second color light 60B and the first color light 60Y from the fifth dichroic element 930A and the sixth dichroic element 930B. In this way, the first color light 60Y and the second color light 60B are guided to the light homogenizing element 150 after passing through the second condenser lens group 940B, and combined to form the illumination beam 70 .

In this way, in this embodiment, since the lighting system 900A adopts the structure of the wavelength conversion module 920 that can achieve similar functions to the aforementioned wavelength conversion module 520, the lighting system 900A can achieve similar functions to the aforementioned lighting system 500A. The effects and advantages will not be repeated here. Moreover, when the lighting system 900A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 9D is a schematic top view of another wavelength conversion module of FIG. 9A . FIG. 9E is a schematic cross-sectional view of the wavelength conversion module in FIG. 9D . The wavelength conversion module 920D of FIG. 9D is similar to the wavelength conversion module 520D of FIG. 5D , and the differences are as follows. In the wavelength conversion module 920D of this embodiment, the annular light-scattering layer 122 is replaced by a specular reflection layer 922 to form a circular specular reflection layer. In this way, the wavelength conversion module 920D can still convert a first part of the excitation light beam 50 from the same excitation light source 110 into the first color light 60Y through the arrangement of multiple point-like microstructures DA in the annular wavelength conversion region OT. , and another second part forms the second color light 60B after passing through the gap CA.

In this embodiment, since the wavelength conversion module 920D has a similar structure to the wavelength conversion module 520D shown in FIG. 5D , the wavelength conversion module 920D can achieve similar effects and advantages as the aforementioned wavelength conversion module 520D, and details will not be repeated here. . Moreover, when the wavelength conversion module 920D is applied to the lighting system 900A and the projection device 100 mentioned above, the lighting system 900A and the projection device 100 can also achieve similar effects and advantages, and details will not be repeated here.

In addition, the wavelength conversion module of another embodiment is similar to the wavelength conversion module 920D of FIG. 9D , but the difference is that the annular light scattering layer 122 is replaced by a mirror reflection layer. The wavelength conversion module also has a ring-shaped wavelength conversion region with a specific light absorption condition. In this embodiment, the wavelength conversion module with a ring-shaped wavelength conversion region with a specific light absorption condition has a similar structure to the wavelength conversion module 920D in FIG. 5D. When the wavelength conversion module of the ring-shaped wavelength conversion region with specific light absorption conditions is applied to the aforementioned lighting system 900A and projection device 100, the lighting system 900A and projection device 100 can also achieve similar effects and advantages, and will not be repeated here. .

FIG. 10 is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 1000A of FIG. 10 is similar to the lighting system 900A of FIG. 9A with the differences described below. In this embodiment, the lighting system 1000A further includes an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y. In this embodiment, the auxiliary light beam 60R is, for example, red light.

Moreover, in this embodiment, the fifth dichroic element 930A is, for example, a dichroic mirror (DMBR) having blue light and red light reflection functions. The sixth dichroic element 930B is a semi-reflective and semi-transmissive element (Blue & Red Half Mirror, BRHM) of blue light and red light, which can make part of the auxiliary light beam 60R and the second color light 60B penetrate, and reflect another part of the auxiliary light beam 60R and the second color light 60B. Second color light 60B.

In addition, as shown in FIG. 10 , in this embodiment, the sixth dichroic element 930B is located on the transmission path of the auxiliary light beam 60R. In this way, the sixth dichroic element 930B can pass part of the auxiliary light beam 60R to pass to the fifth dichroic element 930A, and reflect another part of the auxiliary light beam 60R to pass to the second condenser lens group 940B. Moreover, as shown in FIG. 10, in this embodiment, the fifth dichroic element 930A can reflect the excitation beam 50, and reflect the second color light 60B and the auxiliary light beam 60R from the sixth dichroic element 930B, and convert the light from the wavelength Part of the first color light 60G of the module 920 passes through. In this way, the auxiliary beam 60R, the second color light 60B and part of the first color light 60G from the fifth dichroic element 930A and the sixth dichroic element 930B combine to form the illumination beam 70 after passing through the second condenser lens group 940B.

In this way, the lighting system 1000A can increase the proportion of red light in the lighting beam 70 through the configuration of the auxiliary light source AL, thereby improving the red color performance of the projected image. In addition, in this embodiment, since the lighting system 1000A can also adopt the structure of the wavelength conversion module 920 (or the wavelength conversion modules 920D and 920F) that can be used in the aforementioned lighting system 900A, the lighting system 1000A can achieve the same structure as the aforementioned Similar effects and advantages of the lighting system 900A will not be repeated here. Moreover, when the lighting system 1000A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 11A is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 1100A of FIG. 10 is similar to the lighting system 900A of FIG. 9A with the differences described below. In this embodiment, the fifth dichroic element 930A is, for example, a dichroic mirror (DMY) with a yellow light reflection function, and can transmit blue light, that is, the fifth dichroic element 930A can reflect the first dichroic mirror from the wavelength conversion module 920 One color light 60Y, and make the excitation beam 50 and the second color light 60B from the wavelength conversion module 920 pass through. The sixth dichroic element 930B can simultaneously have the functions of a semi-reflective and semi-transmissive element (BHM) for blue light and a dichroic mirror (DMY) for reflecting yellow light. For example, the sixth dichroic element 930B can be coated with different dichroic films on two opposite surfaces, so that one side can function as a semi-reflective and semi-transmissive element for blue light, while the other side can reflect yellow light. function of the dichroic mirror. In this way, part of the second color light 60B from the wavelength conversion module 920 can pass through, reflect another part of the second color light 60B, and also reflect the first color light 60Y from the wavelength conversion module 920 .

In addition, as shown in FIG. 11A , in this embodiment, the lighting system 1100A further includes a light transmission module 941 . The light transmission module 941 is located on the transmission path of the second color light 60B. For example, in this embodiment, the light transmission module 941 can be a reflective element, and can reflect the second color light 60B. In this way, part of the second color light 60B from the sixth dichroic element 930B can be sequentially transmitted to the fifth dichroic element 930A and the second condensing lens group 940B through the light transmission module 941 . Next, as shown in FIG. 11A , in this embodiment, the first color light 60Y and the second color light 60B from the fifth dichroic element 930A and the sixth dichroic element 930B can pass through the second condensing lens group 940B Then it is transmitted to the light homogenizing element 150 to combine to form the illumination beam 70 .

In this embodiment, because the illumination system 1100A can also adopt the wavelength conversion module 920 (or the wavelength conversion module 920D, or the wavelength conversion module with a ring-shaped wavelength conversion region with a specific light absorption condition) that can be used in the aforementioned illumination system 900A ) structure, so the lighting system 1100A can achieve effects and advantages similar to those of the aforementioned lighting system 900A, which will not be repeated here. Moreover, when the lighting system 1100A is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 11B is a schematic structural diagram of another lighting system in FIG. 1A . The lighting system 1100B of FIG. 11B is similar to the lighting system 1100A of FIG. 11A with the differences described below. In this embodiment, the lighting system 1100B further includes an auxiliary light source AL. The auxiliary light source AL is used to emit an auxiliary light beam 60R, the wavelength band of the auxiliary light beam 60R at least partially overlaps with the wavelength band of the first color light 60Y. In this embodiment, the auxiliary light beam 60R is, for example, red light.

Moreover, as shown in FIG. 11B , in this embodiment, the fifth dichroic element 930A and the sixth dichroic element 930B are located on the transmission path of the auxiliary light beam 60R. Specifically, in this embodiment, the fifth dichroic element 930A is, for example, a dichroic mirror (DMGO) having a green-orange light reflection effect, and can allow blue light to pass through, and can reflect part of the first dichroic mirror from the wavelength conversion module 920. One color light 60G, and make the excitation beam 50, the second color light 60B from the wavelength conversion module 920 and the auxiliary light beam 60R from the auxiliary light source AL pass through. The sixth dichroic element 930B can simultaneously have the functions of a semi-reflective and semi-transmissive element (BHM) for blue light and a dichroic mirror (DMY) for reflecting green and orange light. For example, the sixth dichroic element 930B can be coated with different dichroic films on two opposite surfaces, so that one side can function as a semi-reflective and semi-transmissive element for blue light, and the other side can have green-orange light. The function of the reflective dichroic mirror. In this way, part of the second color light 60B from the wavelength conversion module 920 and the auxiliary light beam 60R from the auxiliary light source AL can pass through, and reflect another part of the second color light 60B, and also reflect part of the first color light from the wavelength conversion module 920. Light 60G.

On the other hand, the light transmission module 941 is, for example, a dichroic mirror (DMB) having a blue light reflection effect, so that the auxiliary light beam 60R can pass through and reflect the second color light 60B. In this way, as shown in FIG. 11B , in this embodiment, the auxiliary light beam 60R can pass through the light transmission module 941 and be transmitted to the fifth dichroic element 930A and the sixth dichroic element 930B, and then pass through the fifth dichroic element Element 930A and sixth dichroic element 930B. Next, as shown in FIG. 11B , in this embodiment, the auxiliary light beam 60R, the second color light 60B and part of the first color light 60G from the fifth dichroic element 930A and the sixth dichroic element 930B pass through the second concentrating light The lens group 940B is then transmitted to the light homogenizing element 150 to combine to form the illumination beam 70 .

In this way, the illumination system 1100B can increase the proportion of red light in the illumination beam 70 through the configuration of the auxiliary light source AL, thereby enhancing the red color performance of the projected image. In addition, in this embodiment, since the illumination system 1100B can also use the wavelength conversion module 920 (or the wavelength conversion module 920D, or the wavelength of the ring-shaped wavelength conversion region with specific light absorption conditions) that can be used in the aforementioned illumination system 1100A conversion module), so the lighting system 1100B can achieve effects and advantages similar to those of the aforementioned lighting system 1100A, which will not be repeated here. Moreover, when the lighting system 1100B is applied to the above-mentioned projection device 100, the projection device 100 can also achieve similar effects and advantages, which will not be repeated here.

FIG. 12 is a schematic structural diagram of another projection device according to an embodiment of the present invention. The projection device 1200 of FIG. 12 is similar to the projection device 100 of FIG. 1A , and the differences are as follows. In this embodiment, there are two light valves LV, which are respectively light valves LV1 and LV2, and the projection device 1200 adopts the lighting system 200A in the aforementioned embodiment of FIG. 2A .

Specifically, as shown in FIG. 12 , in this embodiment, the excitation light source 110 and the auxiliary light source AL are not turned on at the same time, but the auxiliary light beam 60R, the second color light 60B and the first color light 60Y of different colors can be formed in sequence. (or part of the first color light 60G). Next, as shown in FIG. 12 , in this embodiment, the splitting and combining unit DC is located on the transmission path of the illuminating beam 70 and is suitable for converting the illuminating beam 70 into a plurality of sub-illuminating beams 70R, 70G, 70B. For example, as shown in FIG. 12 , the light splitting and combining unit DC may include a dichroic mirror DMB having a blue light reflecting function and a red light reflecting dichroic mirror DMR. In this way, when the excitation light source 110 is turned on, the illumination beam 70 having the second color light 60B and part of the first color light 60G can be sequentially divided into sub-illumination beams 70B and 70G when passing through the dichroic mirror DMB, and then delivered to subsequent on the corresponding light valves LV1 and LV2. Then, the light valves LV1 , LV2 convert the corresponding plurality of sub-illumination beams 70G, 70B into a plurality of image beams 80G, 80B.

On the other hand, when the auxiliary light source AL is turned on, the auxiliary light beam 60R will pass through the dichroic mirror DMB of the light splitting unit DC to form a sub-illumination light beam 70R and be transmitted to one of the subsequent light valves LV1 . Next, the light valve LV1 converts the sub-illumination light beam 70R into corresponding image light beams 80R, and these image light beams 80R, 80G, 80B pass through the dichroic mirror DMR of the splitting unit DC to combine and transmit to the projection lens PL. Moreover, the projection lens PL is located on the transmission path of these image beams 80R, 80G, 80B, and is used to convert the plurality of image beams 80R, 80G, 80B into a projection beam 90, and project it onto a screen (not shown), Therefore, the projected video image can become a color image.

In this embodiment, the projection device 1200 also adopts the aforementioned lighting system 200A and the structure of the wavelength conversion module 120 used therein, so the projection device 1200 can achieve effects and advantages similar to those of the aforementioned projection device 100. Let me repeat. Moreover, the aforementioned lighting systems 200B, 200C, 300B, 300C, 600A, 600B, 600C, 700A, 800A, 1000A, 1100B with auxiliary light sources AL can also replace the lighting system 200A of this embodiment and be applied to the projection device 1200, and The projection device 1200 can also achieve similar effects and advantages, which will not be repeated here.

In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the lighting system and the projection device can convert part of the excitation light beam from the same excitation light source into the first color light through the configuration of the ring-shaped wavelength conversion region of the wavelength conversion module, while the other part forms Second shade. In this way, the lighting system and the projection device can form blue, green, and red colors of light with only one exciting light source, and have a simple structure and a concise optical path layout. Moreover, since the light path layout of the lighting system and the projection device can be effectively simplified, the layout flexibility of other components in the system can also be increased at the same time. In addition, since the lighting system and the projection device only need to be equipped with one exciting light source, the energy of the light source will be concentrated in one place, which can reduce the design complexity of the cooling module and help increase the design flexibility of the system layout. In addition, the lighting system and the projection device can increase the proportion of red light in the lighting beam through the configuration of the auxiliary light source, thereby improving the red color performance of the projection screen.

But the above is only a preferred embodiment of the present invention, and should not limit the scope of the present invention, that is, all simple equivalent changes and modifications made according to the claims of the present invention and the contents of the invention are all Still belong to the scope covered by the patent of the present invention. In addition, any embodiment or claim of the present invention does not need to achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and title are only used to assist in the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, terms such as "first" and "second" mentioned in the specification or claims are only used to name elements or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

Symbol Description:

50: excitation beam

60R: auxiliary beam

60Y, 60G: the first shade

60B: Second color light

70: Lighting Beam

70R, 70G, 70B: Sub-illumination beams

80R, 80G, 80B: image beam

90: projected beam

100, 1200: projection device

100A, 200A, 200B, 300A, 300B, 300C, 500A, 600A, 600B, 600C, 700A, 800A, 900A, 1000A, 1100A, 1100B: lighting system

110: excitation light source

120, 420A, 420C, 420D, 420E, 420F, 420G, 520, 520D, 520F, 920, 920D: wavelength conversion module

121, 521: Substrate

122, 522: annular astigmatism layer

123, 423A, 423C, 423F, 423G, 523F: circular wavelength conversion layer

130: The first color separation element

140, 941: optical transmission module

150: Light homogenizing element

241: Second color separation element

540: Surface reflective element

550A: The first light homogenizing element

550B: Second light homogenizing element

640: The third color separation element

700A lighting system

730: Fourth color separation element

730A: Zone 1

730B: Second District

900A: Lighting system

922: mirror reflection layer

930A: Fifth color separation element

930B: Sixth color separation element

940A: The first condenser lens group

940B: Second condenser lens group

AL: auxiliary light source

CA: void

DC: split light unit

DM1, DM2, DMB, DMR: dichroic mirrors

DA: dotted microstructure

F1, F2: focus

IE: light input end

LV, LV1, LV2, LV3: light valve

NT: non-transition area

OD1: first annular astigmatism zone

OD2: second annular astigmatism

OR1: the first annular reflection area

OR2: the second annular reflection area

OT: annular wavelength conversion region

PL: projection lens

RL: reflective layer

SP: spot

TR1, TR2: Light passing regions.

Claims (24)

1. An illumination system for providing an illumination beam, characterized in that the illumination system comprises an excitation light source and a wavelength conversion module, wherein, The excitation light source is used to emit an excitation beam; and The wavelength conversion module is located on the transmission path of the excitation beam and has an annular wavelength conversion region. When the excitation beam is transmitted to the wavelength conversion module, the excitation beam is formed on the wavelength conversion module. A light spot, at least part of the light spot is located on the ring-shaped wavelength conversion region, and the first part of the excitation beam is incident on the ring-shaped wavelength conversion region and converted into the first color light, and the second part of the excitation beam Incident to the wavelength conversion module to form a second color light, wherein the first color light and the second color light are emitted from the wavelength conversion module at the same time, and the illumination light beam includes the first color light and the The second color light, and the ratio of the exciting light beam to the exciting light beam in the second part ranges from 5% to 30%. 2. The lighting system according to claim 1, wherein the wavelength conversion module comprises: substrate; and The ring-shaped wavelength conversion layer is located on the substrate and arranged corresponding to the ring-shaped wavelength conversion region. 3. The lighting system according to claim 2, wherein the wavelength conversion module further has a non-conversion area, wherein at least part of the light spot is located on the non-conversion area, and the second part of the The excitation light beam is incident on the non-conversion area to form the second color light. 4. The lighting system according to claim 3, wherein the wavelength conversion module comprises a first annular astigmatism area and a second annular astigmatism area, and the first annular astigmatism area and the second annular astigmatism area A shaped astigmatism region is located on the substrate and corresponds to the non-converting region, wherein the annular wavelength conversion layer is located between the first annular astigmatism region and the second annular astigmatism region, and the annular A wavelength conversion layer surrounds the first annular astigmatism region and is surrounded by the second annular astigmatism region. 5. The lighting system according to claim 3, wherein the ring-shaped wavelength conversion layer has a plurality of point-like microstructures, the plurality of point-like microstructures are composed of wavelength conversion materials, and the plurality of point-like microstructures are formed of wavelength conversion materials. There are gaps without wavelength conversion material between the microstructures and the plurality of gaps correspond to the non-conversion region, wherein the second part of the excitation light beam is formed after passing through the non-conversion region of the substrate the second color light. 6. The lighting system according to claim 2, wherein when the ring-shaped wavelength conversion layer satisfies the light absorption condition, the second part of the excitation light beam is formed after passing through the ring-shaped wavelength conversion layer For the second color light, the light absorption condition is that the volume concentration of the wavelength conversion material in the ring-shaped wavelength conversion layer is between 30% and 85%, or the thickness of the ring-shaped wavelength conversion layer is between 0.03mm to 0.3mm. 7. The lighting system according to claim 3, wherein the wavelength conversion module further comprises a first annular reflective area and a second annular reflective area, the first annular reflective area and the second annular reflective area The annular reflective area is located on the substrate and corresponds to the non-conversion area, wherein the annular wavelength conversion layer is located between the first annular reflective area and the second annular reflective area, and the The annular wavelength conversion layer surrounds the first annular reflective area and is surrounded by the second annular reflective area. 8. The lighting system according to claim 2, wherein the outer diameter edge of the annular wavelength conversion layer is aligned with the outer diameter edge of the substrate. 9. The lighting system according to claim 1, wherein the second color light is the same color as the exciting light beam, and the lighting system further comprises: The first dichroic element is located between the excitation light source and the wavelength conversion module, the excitation light beam of the excitation light source is transmitted to the wavelength conversion module through the first dichroic element, and the wavelength conversion the module reflects the first color light to the first dichroic element; and The light transmission module is located on the transmission path of the second color light, and is used for transmitting the second color light emitted from the wavelength conversion module to the first color separation element. 10. The lighting system according to claim 9, further comprising: an auxiliary light source, configured to emit an auxiliary light beam, the wavelength band of the auxiliary light beam at least partially overlaps with the wavelength band of the first color light, wherein the second dichroic element is located on the transmission path of the second color light and the auxiliary light beam, And the auxiliary light beam, the first color light and the second color light are combined to form the illumination light beam after passing through the first color separation element and the second color separation element. 11. The lighting system according to claim 2, wherein the substrate is a reflective substrate, the second color light is the same color as the excitation light beam, and the lighting system further comprises: A curved reflective element, located between the excitation light source and the wavelength conversion module, wherein the excitation light beam from the excitation light source is transmitted to the wavelength conversion module after passing through the light passing area on the curved reflective element; as well as The first light homogenizing element, wherein the first color light and the second color light from the wavelength conversion module are delivered to the light incident end of the first light homogenizing element via the curved reflective element. 12. The lighting system according to claim 11, wherein the curved reflective element is an elliptical reflective element, and the excitation light beam from the excitation light source is converged through the light passing area of the curved reflective element To the focal point of the curved reflective element, the wavelength conversion module is located at the focal point, and the light incident end of the first light homogenizing element is located at another focal point of the curved reflective element. 13. The lighting system according to claim 11, further comprising: The auxiliary light source is used to emit an auxiliary light beam, the wavelength band of the auxiliary light beam overlaps at least partly with the wavelength band of the first color light, wherein the auxiliary light beam passes through the curved surface reflective element, and then transmits to the first light uniform The light incident end of the chemical element. 14. The lighting system according to claim 11, further comprising: an auxiliary light source, configured to emit an auxiliary light beam, the wavelength band of the auxiliary light beam at least partially overlaps with the wavelength band of the first color light; a second light homogenizing element, located on the delivery path of the auxiliary light beam, for homogenizing the auxiliary light beam; and The third dichroic element is located on the transmission path of the auxiliary light beam, wherein the first color light and the second color light from the first light homogenizing element and the light from the second light homogenizing element The auxiliary beam forms the illumination beam after passing through the third dichroic element. 15. The lighting system according to claim 2, wherein the substrate is a reflective substrate, the second color light is the same color as the excitation light beam, and the lighting system further comprises: The fourth dichroic element is located between the exciting light source and the wavelength conversion module, wherein the fourth dichroic element has a first area and a second area, and the second area surrounds the first area. 16. The lighting system according to claim 15, characterized in that, the first region of the fourth dichroic element can allow the excitation light beam to pass through and reflect the first color light, and the second A region is capable of reflecting the first color light and the second color light from the wavelength conversion module. 17. The lighting system according to claim 15, wherein the first region of the fourth dichroic element can reflect the excitation beam and allow the first color light to pass through, and the second A region is capable of transmitting the first color light and the second color light from the wavelength conversion module. 18. The lighting system according to claim 15, further comprising: an auxiliary light source, configured to emit an auxiliary light beam, the wavelength band of the auxiliary light beam at least partially overlaps with the wavelength band of the first color light, wherein the auxiliary light beam, the first color light and the second color light pass through the The fourth dichroic elements are then combined to form the illumination beam. 19. The lighting system according to claim 7, wherein the substrate is a reflective substrate, the second color light is the same color as the excitation light beam, and the lighting system further comprises: a fifth dichroic element , the sixth dichroic element, the first condenser lens group and the second condenser lens group; wherein, The fifth dichroic element is located between the excitation light source and the wavelength conversion module; The first condensing lens group is located between the fifth dichroic element, the sixth dichroic element, and the wavelength conversion module, and the sixth dichroic element can allow part of the second color light to pass through transmits, and reflects another part of said second color light, wherein, The excitation light beam from the excitation light source is guided to the first condensing lens group by the fifth dichroic element, and then obliquely incident on the wavelength conversion module through the first condensing lens group Then forming the first colored light and the second colored light; The first color light from the wavelength conversion module obliquely enters the first condensing lens group and passes through the fifth dichroic element and the sixth dichroic element before being transmitted to the second condensing lens group. optical lens group; The second color light from the wavelength conversion module is obliquely incident on the first condenser lens group; the second color light after passing through the sixth dichroic element is transmitted to the fifth dichroic element and then transmitted to the second condensing lens group, and another part of the second color light is transmitted to the second condensing lens group; The second condensing lens group is used to condense the second color light and the first color light from the fifth dichroic element and the sixth dichroic element. 20. The lighting system according to claim 19, further comprising: a light transmission module, located on the transmission path of the second color light, wherein the second color light from the part of the sixth color separation element The colored light is sequentially transmitted to the fifth dichroic element and the second condenser lens group through the light transmission module. 21. The lighting system according to claim 19, further comprising: An auxiliary light source, used to emit an auxiliary light beam, the wavelength band of the auxiliary light beam at least partially overlaps with the wavelength band of the first color light, wherein the fifth dichroic element can reflect the excitation light beam, the second color light and the the auxiliary light beam and make the first color light pass through, the sixth dichroic element is located on the transmission path of the auxiliary light beam, and the sixth dichroic element can make part of the auxiliary light beam pass through and reflecting another part of the auxiliary light beam, wherein the auxiliary light beam from the fifth dichroic element, the sixth dichroic element, the second color light and the first color light pass through the second The condensing lens groups are combined to form the illumination beam. 22. The lighting system according to claim 20, further comprising: an auxiliary light source, configured to emit an auxiliary light beam, the wavelength band of the auxiliary light beam at least partially overlaps with the wavelength band of the first color light, wherein the fifth dichroic element and the sixth dichroic element are located between the auxiliary light beam on the transmission path and make the auxiliary light beam penetrate, the fifth dichroic element can make the exciting light beam, the second color light and the auxiliary light beam pass through and reflect the first color light, and the The light transmission module can make the auxiliary light beam penetrate and reflect the second color light, wherein the auxiliary light beam from the fifth dichroic element, the sixth dichroic element, the second color light and the first color light The colored lights combine to form the illumination light beam after passing through the second condenser lens group. 23. The lighting system according to claim 1, wherein the wavelength conversion module comprises: Substrate; a ring-shaped wavelength conversion layer located on the substrate and disposed corresponding to the ring-shaped wavelength conversion region; and The reflection layer is arranged between the annular wavelength conversion layer and the substrate. 24. A projection device, characterized in that it comprises: the lighting system according to claim 1, a light splitting and combining unit, at least two light valves, and a projection lens; wherein, The light splitting unit is located on the transmission path of the illumination beam, and is used to convert the illumination beam into a plurality of sub-illumination beams; The at least two light valves are located on the delivery paths of the plurality of sub-illumination beams and are configured to convert the corresponding plurality of sub-illumination beams into a plurality of image beams; and The projection lens is located on the transmission path of the plurality of image beams and is used to convert the plurality of image beams into a projection beam, wherein the plurality of image beams are transmitted to the projection lens through the splitting and combining unit .

Images